. In a screening test for admission to an engineering college, 90 mult

1.	. In a screening test for admission to an engineering college, 90 multiple-choice questions wereasked. In the test, 4 marks were awarded for each correct answer and 1 mark was deducted foreach wrong answer. A candidate answered all the questions and secured 200 marks. How manyquestions did he answer correctly?
Answer» Let the number of correct answer be x and the number of wrong answer be y According to the question, x+y=90................(1)4x-y=200.............(2)(1)+(2);5x=290; x=56then y=34

. In a screening test for admission to an engineering college, 90 multiple-choice questions wereasked. In the test, 4 marks were awarded for each correct answer and 1 mark was deducted foreach wrong answer. A candidate answered all the questions and secured 200 marks. How manyquestions did he answer correctly?

Answer»

Let the number of correct answer be x and the number of wrong answer be y

According to the question,

x+y=90................(1)4x-y=200.............(2)(1)+(2);5x=290; x=56then y=34